Binder



P. o. UNGER March 21, 1939.

BINDER Filed April 17, 1957 2 Sheets-Sheet l March 21, 1939. p, O, UNGER 2,151,539

BINDR Filed April 17, 1957 2 Sheets-Sheetl 2 Patented Mar. 21, 1939 BINDER Paul 0. Unger, Elmhurst, Ill., assigner to Wilson- Jones Company, Chicago, Ill., a corporation of Massachusetts Application April 17, 1937, Serial No. 137,388

4 Claims.

This invention relates to a binder particularly adapted to bind a plurality of loose sheets permanently. It is oi particular importance in connection with re-binding bound books in which the binding has been damaged so as to make its replacement necessary or desirable.

It is an object of this invention to provide simple, inexpensive and eiiicient means for permanently binding a plurality ci loose sheets. It is a further object of this invention to provide binding means in which the binding margin is `kept as small as possible without impairing the security oi the bound sheets. Other objects of this invention will become apparent upon reading the following description, taken in conjunction with the accompanying drawings, in which Figure 1 is a longitudinal sectional view of the binder with its covers in open position;

Figure 2 is a cross sectional view taken along the line II-II of Figure 1 but showing the covers in closed position;

Figure 3 is a view similar to Figure 2 taken along the line III--III of Figure 1; and

Figure 4 is an exploded vieW showing the parts in their relative positions for assembly.

In the drawings the reference numeral 2 indicates a stack of loose sheets which are to be bound together permanently. The sheets are provided with registering apertures 3 spaced as close to the edge oi the sheets as the strength of the paper Will permit. The apertures are comparatively long and are extremely narrow so that only a very small b-inding edge is required. This is of particular importance in reminding books in which the sheets contain printing or Writing Very close to the inner edge of the sheets.

A pair of angle members II and 5 are arranged to embrace the edge of the sheets adjacent which the apertures are positioned. The angle members 4 and 5 are' provided with apertures 5 adapted to register with the apertures 3. Each angle member has a hinge plate 'I permanently secured thereto. Each plate 'I extends beyond the corner of its angle member and is provided with a plurality of hinge lugs B which are curled inwardly so as to overhang the apertured side of the angle member. The angle member 4 is provided with a plurality of threaded apertures 9 which are spaced between the hinge lugs 8 as close to the corner of the angle as possible. The angle member 5 is provided with apertures IIJ in registration with the apertures 9. The apertures III are not threaded. The angle member 5 is also provided with a plurality of apertures II lin which eyelets or rivets I2 are positioned before the binder is assembled. The eyelets or rivets I2 may be secured to the angle member 5 as shown in Figure 4, or, if desired, they may be formed integrally with the angle member 5 by drawing the metal therefrom.

After the angle members 4 and 5 are positioned with respect to the stack of sheets 2, a plurality of bifurcated binding members I3 are inserted through the apertures 6 and 3 to maintain the alignment of the sheets. Each binding member consists of a at strip of thin metal bent at its mid-portion to provide a head I4 of double thickness. A plurality of screws I5 are inserted through the apertures II) and are threaded into the apertures 9. If the ends of the screws I5 project above the angle member 4 they are cut ofi iiush with the angle member. The ends I6 of the binding members are then bent against the angle members 5. A flat plate I'I is positioned against the angle member 5 so as to cover the ends I 6 of the binding members. The member Il is provided with notches I8 to allow clearance for the ends of the screws I5 and with apertures I9 registering with the apertures II. The eyelet or rivet I2 is peened over against the flat plate I'I to permanently prevent access to the ends I6 of the binding members.

A back member 2D is provided with hinge lugs 2| arranged to t between the hinge lugs 8 on. the angle members 4 and 5. A pair of cover members 22 are provided with hinge lugs 23 arranged to fit in the spaces between the hinge lugs 8 that are not occupied by the hinge lugs 2|. The back member and the cover members are connected to the angle members 4 and 5 by means of pintles 24 passed through the hinge lugs 8, 2I and 23. As can be seen clearly in Figure 4, the hinge partially covers the ends of the screws I5 land prevents access to the screws.

From the foregoing description it will be seen that it is impossible to remove sheets without tearing them or to insert sheets into the binder after the binder has been assembled. Although I have described one embodiment oi my invention in detail, it will be understood that the description is illustrative, rather than restrictive, as many details may be modified or changed without departing from the spirit or scope o my inven tion. Accordingly, I do not desire to be restricted to the exact construction described, except as limited by the appended claims.

' I claim:

1. In a binder, a stack of loose sheets, a pair of angle members arranged to embrace one edge of said stack of loose sheets, a plurality of screws connecting opposed sides of said angle members outside the area of said sheets to hold said angle members tightly against said sheets, a binding member passing through said sheets and said angle members, and a pair of covers hinged adjacent the corners of said angle members, said hinges preventing access to said screws.

2. Means for permanently re-binding the contents of a bound book consisting of a stack of sheets, a pair of angle members arranged to embrace one edge of said stack of sheets, a plurality of flat binding members inserted through apertures in said angle members and said sheets near tothe edge of the sheets, and a plurality of screws passing through said angle members beyond the inner edge of said stack of sheets to hold said angle members tightly against said sheets.

3. Means for permanently re-binding the contents of a bound book consisting of a stack of sheets, a pair of angle members arranged to embrace one edge of said stack of sheets, a plurality of screws passing through said angle members beyond the inner edge of said stack of sheets to hold said angle members tightly against said sheets, a. plurality of fiat binding members passing through apertures in said angle members and said sheets near the edge of said sheets, one end of each of said binding members being bent against one of said angle members, and means to prevent access to said bent ends of said binding members.

4. In a loose leaf binder, a stack of sheets, a pair of angle members arranged to embrace one edge of said stack of loose sheets, a plurality of screws connecting opposed sides of said angle members to hold said angle members tightly against said sheets, a plurality of registering apertures in said sheets and said opposed sides of said angle members, a plurality of bifurcated members inserted through said apertures, said bifurcated members each having one end of suflicient dimensions to prevent passage of said end through said apertures, the opposite ends of each of said bifurcated members being bent in opposite directions against one side of one of said angle members, a flat plate permanently secured to said last mentioned angle member so as to prevent access to said bent ends of said bifurcated member, and a pair of cover members hinged to said angle members, the hinges being arranged to prevent access to said screws.

PAUL O. UNGER. 

